I agree, you will not find a more neutral handling tire with great grip and good mileage.
PR4 are junk in my opinion. User reviews rate them goid, but full blind reviews rate them dead last every time.
S20/21 are great tires, but will not give you better street grip than T30 and won't last as long. If a track day is in your future, then this would make sense. They are also a great value.
Angel GT is also a great tire with respect to grip, and although I have not uses them, have heard many complaints of very slow and lethargic turn in.
just my opinion.